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public/tinymce/classes/ForceBlocks.js

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+/**
+ * ForceBlocks.js
+ *
+ * Copyright, Moxiecode Systems AB
+ * Released under LGPL License.
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+define("tinymce/ForceBlocks", [], function() {
+	return function(editor) {
+		var settings = editor.settings, dom = editor.dom, selection = editor.selection;
+		var schema = editor.schema, blockElements = schema.getBlockElements();
+
+		function addRootBlocks() {
+			var node = selection.getStart(), rootNode = editor.getBody(), rng;
+			var startContainer, startOffset, endContainer, endOffset, rootBlockNode;
+			var tempNode, offset = -0xFFFFFF, wrapped, restoreSelection;
+			var tmpRng, rootNodeName, forcedRootBlock;
+
+			forcedRootBlock = settings.forced_root_block;
+
+			if (!node || node.nodeType !== 1 || !forcedRootBlock) {
+				return;
+			}
+
+			// Check if node is wrapped in block
+			while (node && node != rootNode) {
+				if (blockElements[node.nodeName]) {
+					return;
+				}
+
+				node = node.parentNode;
+			}
+
+			// Get current selection
+			rng = selection.getRng();
+			if (rng.setStart) {
+				startContainer = rng.startContainer;
+				startOffset = rng.startOffset;
+				endContainer = rng.endContainer;
+				endOffset = rng.endOffset;
+
+				try {
+					restoreSelection = editor.getDoc().activeElement === rootNode;
+				} catch (ex) {
+					// IE throws unspecified error here sometimes
+				}
+			} else {
+				// Force control range into text range
+				if (rng.item) {
+					node = rng.item(0);
+					rng = editor.getDoc().body.createTextRange();
+					rng.moveToElementText(node);
+				}
+
+				restoreSelection = rng.parentElement().ownerDocument === editor.getDoc();
+				tmpRng = rng.duplicate();
+				tmpRng.collapse(true);
+				startOffset = tmpRng.move('character', offset) * -1;
+
+				if (!tmpRng.collapsed) {
+					tmpRng = rng.duplicate();
+					tmpRng.collapse(false);
+					endOffset = (tmpRng.move('character', offset) * -1) - startOffset;
+				}
+			}
+
+			// Wrap non block elements and text nodes
+			node = rootNode.firstChild;
+			rootNodeName = rootNode.nodeName.toLowerCase();
+			while (node) {
+				// TODO: Break this up, too complex
+				if (((node.nodeType === 3 || (node.nodeType == 1 && !blockElements[node.nodeName]))) &&
+					schema.isValidChild(rootNodeName, forcedRootBlock.toLowerCase())) {
+					// Remove empty text nodes
+					if (node.nodeType === 3 && node.nodeValue.length === 0) {
+						tempNode = node;
+						node = node.nextSibling;
+						dom.remove(tempNode);
+						continue;
+					}
+
+					if (!rootBlockNode) {
+						rootBlockNode = dom.create(forcedRootBlock, editor.settings.forced_root_block_attrs);
+						node.parentNode.insertBefore(rootBlockNode, node);
+						wrapped = true;
+					}
+
+					tempNode = node;
+					node = node.nextSibling;
+					rootBlockNode.appendChild(tempNode);
+				} else {
+					rootBlockNode = null;
+					node = node.nextSibling;
+				}
+			}
+
+			if (wrapped && restoreSelection) {
+				if (rng.setStart) {
+					rng.setStart(startContainer, startOffset);
+					rng.setEnd(endContainer, endOffset);
+					selection.setRng(rng);
+				} else {
+					// Only select if the previous selection was inside the document to prevent auto focus in quirks mode
+					try {
+						rng = editor.getDoc().body.createTextRange();
+						rng.moveToElementText(rootNode);
+						rng.collapse(true);
+						rng.moveStart('character', startOffset);
+
+						if (endOffset > 0) {
+							rng.moveEnd('character', endOffset);
+						}
+
+						rng.select();
+					} catch (ex) {
+						// Ignore
+					}
+				}
+
+				editor.nodeChanged();
+			}
+		}
+
+		// Force root blocks
+		if (settings.forced_root_block) {
+			editor.on('NodeChange', addRootBlocks);
+		}
+	};
+});